Results 171 to 180 of about 2,149 (226)

Modulation and Control of Transformerless UPFC

IEEE Transactions on Power Electronics, 2016
In this paper, a modulation and control method for the new transformerless unified power flow controller (UPFC) is presented. As is well known, the conventional UPFC that consists of two back-to-back inverters requires bulky and often complicated zigzag transformers for isolation and reaching high power rating with desired voltage waveforms.
Shuitao Yang, Xiaorui Wang, Deepak Gunasekaran   +2 more
exaly   +2 more sources

Control system for a UPFC in a transmission line

IECON '98. Proceedings of the 24th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.98CH36200), 2000
This paper focuses on the control of the power flow through a transmission line using a PWM.based UPFC. The dynamic model of the UPFC has been developed using the space-vector representarion of the instantaneous three-phase variables. The Park’s transformation and the reference frame selected reduce the control of the real- and reactive-power ...
García Cerrada, Aurelio, García González, Pablo   +1 more
openaire   +2 more sources

Dynamic security corrective control by UPFCs

IEEE Transactions on Power Systems, 2001
This paper deals with the development of a nonlinear programming methodology for evaluating corrective actions to improve the dynamic security of power systems when transient instability is detected. Remedial actions are implemented by exploiting the fast response of unified power flow controllers (UPFCs). The algorithm is implemented and tested on the
Bruno S, DE TUGLIE, Enrico Elio, LA SCALA, Massimo, Scarpellini P.   +3 more
openaire   +1 more source

Design and Test of UPFC-FCL Prototype

2012 Third International Conference on Digital Manufacturing & Automation, 2012
Unified Power Flow Controller with Fault Current limiting(UPFC-FCL) which consists of the UPFC module and FCL module connected via the series coupling transformer is discussed from the points of topology, working principles and control strategies, as well as the analysis of simulation results.
Zhongshan Tian, Yapeng Liu, Daozhuo Jiang, Yuqing Zang   +3 more
openaire   +1 more source

A UPFC based on matrix converter

2010 1st Power Electronic & Drive Systems & Technologies Conference (PEDSTC), 2010
The main concept of unified power flow controller (UPFC) is based on back to back connection of two inverters with a common capacitor dc link. This capacitor brings about several disadvantages such as affecting the reliability of UPFC. This paper proposes a new topology for UPFC based on matrix converter.
A. R. Marami Iranaq, M. Tarafdar Haque, E. Babaei   +2 more
openaire   +1 more source

Simulation of UPFC

2001 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.01CH37194), 2002
This presentation describes the modeling techniques for a voltage source converter (VSC)-based flexible alternating current transmission systems (FACTS) controller, such as a unified power flow controller (UPFC). The model is implemented in an Electro-Magnetic Transients Program (EMTP) simulation package and the results are compared with the ...
openaire   +1 more source

Transient stability enhancement with UPFC

IET-UK International Conference on Information and Communication Technology in Electrical Sciences (ICTES 2007), 2007
In this paper, the most versatile FACTS device UPFC is modelled and implemented in the SMIB (single machine infinite bus) system and standard 9 - bus system (Anderson and Fouad, 1977). The performances of these systems are simulated by using MATLAB. It has been found that the critical clearing time of the system has increased after including the UPFC ...
N.M.J. Swaroopan, P. Somasundaram
openaire   +1 more source

Passivity-based control of UPFCs

2009 International Conference on Power Electronics and Drive Systems (PEDS), 2009
We explore the passivity-based control (PBC) for robust UPFC controller design. Under this framework, the dynamical model of UPFC will be represented by a Euler-Lagrangian (EL) system with a set of EL parameters. The energy-dissipative properties of system model are fully retained.
Chia-Chi Chu, Hung-Chi Tsai
openaire   +1 more source

The operation experience of KEPCO UPFC

2005 International Conference on Electrical Machines and Systems, 2005
KEPCO (Korea Electric Power Corporation) has installed UPFC (unified power flow controller), voltage-source FACTS (flexible AC transmission system) device at Kangjin substation, Kangjin-gun, Jeonnam province in May 2003. Kangjin UPFC is composed of 40 MVA shunt inverter and 40 MVA series inverter, and has three operation modes, STATCOM (static ...
S.Y. Kim, J.S. Yoon, B.H. Chang, D.H. Baek   +3 more
openaire   +1 more source

Comparative of performance for UPFC with DPFC

2017 IEEE International Conference on Electrical, Instrumentation and Communication Engineering (ICEICE), 2017
UPFC and DPFC are two important devices for power quality improvement. These FACTs devices are generally used between sending end and receiving end. This paper deals with comparison of UPFC & DPFC systems operating at same load and same sending voltage. A basic two bus system with UPFC is modelled and simulated.
Akhib Khan Bahamani, G.M Sreerama Reddy, V. Ganesh   +2 more
openaire   +1 more source